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 Forum index » DIY Hardware and Software » Circuit Bending
Rapman
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telstarmagikistferrari



Joined: Jun 16, 2008
Posts: 276
Location: Indianapolis, Indiana
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PostPosted: Thu Jul 08, 2010 8:08 am    Post subject: Reply with quote  Mark this post and the followings unread

OK.. I got a Rapman! My question is simple: how do you fucking change beats? I can't figure it out. I don't mean as a bend, I just mean how do you change beats as is? I can't figure it out! Ridiculous but I don't see how it's done. Thanks anybody/everybody.
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v-un-v
Janitor
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Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
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PostPosted: Thu Jul 08, 2010 8:12 am    Post subject: Reply with quote  Mark this post and the followings unread

Try pressing the keys Wink Smile
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marmora



Joined: Sep 06, 2009
Posts: 8
Location: Chicago

PostPosted: Mon Aug 09, 2010 2:32 pm    Post subject: Reply with quote  Mark this post and the followings unread

Someone gave me a Rap-Master (the Realistic version) recently and I've been poking around inside.
There are some good sounds near FB1, R36 and the transistor near R36 as mentioned earlier. I found at least one other filter for the drum beats just poking around there. It wasn't amazing, but it's always fun to find something and have your machine still working.
Anyhow, I wanted to ask if anyone knew which pins of the In and Out jacks to connect the feedback pot to. I've been poking around there and am a little stumped since the jacks have quite a few pins. I've used switching jacks before, but I'm still a little uncertain.
Thanks!
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mikebike



Joined: Apr 06, 2010
Posts: 6
Location: MPLS

PostPosted: Sun Jan 16, 2011 4:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

man, id like to hear more about taking that chip out and building a seperate prossesor.

has anyone experimented more with this?

maybe it could just have an in/out with normalizing jacks
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umschmitt



Joined: Jun 29, 2011
Posts: 158
Location: brrlin
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PostPosted: Wed Jun 29, 2011 7:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey. Upping an old thread.
Having found such an object (rapman) in the fuzzy limbs of the peripheria of the merchant system, I started delightfully to bend it.
Alas. Back on earth : I think I fried the OKI6322 chip. Stoopid me.
You never know, maybe someone experienced this and eventually found out it was a burnt cap/resistor/whatever ? No ? OK, just had to ask.
Still, I wanted to say : having read the datasheet for that OKI (thanks Alexander) there seems to be a way to have all 17 pitch variations available, using 4+1 switches. Did anybody hear about that ? Obviously I won't be the one who tries this…

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efabric



Joined: Jan 05, 2012
Posts: 19
Location: Caen, France

PostPosted: Mon Jul 02, 2012 8:58 am    Post subject: Reply with quote  Mark this post and the followings unread

In the datasheet, there is an up down mode for all the 17 pitches.
Anyone tried this ?

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efabric



Joined: Jan 05, 2012
Posts: 19
Location: Caen, France

PostPosted: Tue Jul 03, 2012 6:12 am    Post subject: Reply with quote  Mark this post and the followings unread

According to the voice effector msm6322 datasheet, I think a better feedback option would be to connect the built in line input (LIN, pin 14) to the line output (aout, pin11) , before the headphones power amp, with a tailored pot/resistor couple.
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PHOBoS



Joined: Jan 14, 2010
Posts: 1731
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PostPosted: Thu Dec 19, 2013 2:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

Alexander wrote:
I found this attached datasheet, this could be very useful in doing a lot of weird things with the voice changer!

thank you very much for posting that! Laughing
I'm currently doing experiments with the same OKI chip taken from a mixer, posted here

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